Since a Landesk Core recommends a server 2003 r2 or better along with a sql server. Can someone kinfly let me know the actual hardware specs for say about 150 clients. I would like to know processors , ram , harddrive space etc for both the SQL server and the Win2k3 r2 or win2k8 r2 server

Just a quick check on your post. You mention a LANDesk Core, but you're posting on the Service Desk section of the community. Are you referring to Service Desk, if so the best place to get the real detail is in the product docs covering the scaling and specification of the system, otherwise one of my colleagues may well be able to move this post to the LDMS section, or you can just repost there.